In a statement, the team said there is no timetable for Van Noy’s return.

“Kyle Van Noy underwent a successful surgical procedure today due to a core muscle injury. We will continue to monitor Kyle’s progress and provide updates when appropriate.”

Van Noy says it’s hard to pinpoint the injury that kept him out of Friday night’s preseason win over Jacksonville.

Van Noy’s potential is encouraging to the Lions, but this injury could halt his progress for the time being. He participated in a light drill Saturday during the portion of practice open to reporters, but that doesn’t necessarily mean he’ll be playing any time soon.

“He still has evaluation to go through and so they’ll make a determination on those kinds of things here in the near future,” coach Jim Caldwell said. “It was one of those things that progressed and got a little bit worse. It was not one particular event where it happened.”